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Jul
25
accepted Graph containing every trees of size $n$ as subgraphs
Jul
25
answered Graph containing every trees of size $n$ as subgraphs
Jul
25
answered prove $\sum\limits_{cyc} \frac {a^3} {b+c+d} \geq \frac {1} {3}$
Jul
25
comment prove $\sum\limits_{cyc} \frac {a^3} {b+c+d} \geq \frac {1} {3}$
For your idea, just add up all inequalities of type $a^2+b^2 \geq 2ab$.
Jul
25
revised prove $\sum\limits_{cyc} \frac {a^3} {b+c+d} \geq \frac {1} {3}$
added 269 characters in body
Jul
25
comment prove $\sum\limits_{cyc} \frac {a^3} {b+c+d} \geq \frac {1} {3}$
@Macavity You're right. $f$ is not convex. Your second comment seems to work.
Jul
25
revised prove $\sum\limits_{cyc} \frac {a^3} {b+c+d} \geq \frac {1} {3}$
added 299 characters in body
Jul
25
answered prove $\sum\limits_{cyc} \frac {a^3} {b+c+d} \geq \frac {1} {3}$
Jul
23
comment Graph containing every trees of size $n$ as subgraphs
Thanks for this interesting conjecture. But what I'm asking is the minimum number of edges required for some graph, while the conjecture is asking for all graph.
Jul
22
awarded  Yearling
Jul
22
asked Graph containing every trees of size $n$ as subgraphs
Jul
2
awarded  Curious
Feb
1
awarded  Popular Question
Dec
29
comment Dividing a deck of cards using only imagination
@hunter Let the two players be A and B and two cards be 1 and 2. A simply choose her card uniformly from 1 and 2, and pass the other to B. Now the cards are distributed uniformly, and since each individual knows his card, knowing the opponent's card does not add to that information.
Dec
28
asked Dividing a deck of cards using only imagination
Jul
17
awarded  Yearling
Jun
13
comment Mathematical (or physical) formulation of life
Thanks for the recommendation! I will check that book too.
Jun
12
comment Mathematical (or physical) formulation of life
@DejanGovc I knew the title, but didn't know of its content! Thanks for pointing me out the book.
Jun
12
comment Mathematical (or physical) formulation of life
@SimonMarkett However I think it is not easy to describe how the life is emerged with the game of life. The patterns are designed carefully, and it seems hard to make them spontaneously from some initial state.
Jun
12
revised Mathematical (or physical) formulation of life
added 269 characters in body